Functional morphology and surface topography of Leucochloridium sp. (Digenea), revealed by scanning electron microscopy

1976 ◽  
Vol 51 (1) ◽  
pp. 115-128 ◽  
Author(s):  
Tor A. Bakke
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Topography ◽  
Functional Morphology ◽  
Scanning Electron

Enamel Corrosion Produced by Zinc Phosphate Dental Cement

1976 ◽  
Vol 55 (1) ◽  
pp. 107-110 ◽  
Author(s):  
Abraham Abramovich ◽  
Ricardo L. Macchi ◽  
Lucía M. Ribas
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phosphoric Acid ◽  
Acid Solution ◽  
Surface Topography ◽  
Zinc Phosphate ◽  
Tooth Enamel ◽  
Phosphoric Acid Solution ◽  
Dental Cement ◽  
Scanning Electron

The surface of tooth enamel that had been left in contact with a phosphoric acid solution or a zinc phosphate cement mix was studied by scanning electron microscopy. Both treatments modified enamel surface topography. The modifications were represented by cavities of varying extension and depth.

Surface Topography of Hymenolepis diminuta by Scanning Electron Microscopy

1973 ◽  
Vol 59 (4) ◽  
pp. 667 ◽  
Author(s):  
John E. Ubelaker ◽  
V. F. Allison ◽  
Robert D. Specian
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Topography ◽  
Hymenolepis Diminuta ◽  
Scanning Electron

Echinostoma revolution (Froelich, 1802) Looss, 1899 and Isthmiophora melis (Schrank, 1788) Lühe, 1909 (Echinostomatinae, Digenea): Scanning electron microscopy of the tegumental surfaces

1984 ◽  
Vol 58 (3) ◽  
pp. 187-195 ◽  
Author(s):  
Lesley R. Smales ◽  
Harvey D. Blankespoor
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Topography ◽  
Body Surface ◽  
Secretory Granules ◽  
The Body ◽  
Taxonomic Character ◽  
Secretory Structures ◽  
Unusual Structure ◽  
Scanning Electron

ABSTRACTA detailed study of the surface topography of the echinostomes Echinostoma revolution and Isthmiophora melis has been carried out using SEM. The tegument of the body surface has a cobblestone-like appearance with interspersed pits. The presence of possible secretory granules is noted. Observations of the anterior end reveal that the collar spines are retractable. An unusual structure is described from the ventral gap of the spiny collar of E. revolutum. The origins of this structure and the possible functions of the spiny collar are discussed. The shape and distribution of body spines is described. Differences in cirrus morphology for the two species are described. The taxonomic position of, I. melis and the significance of cirrus morphology as a useful taxonomic character are discussed. Four types of presumed sensory or secretory structures occur—ciliated, domed, button and bilobed papillae. Their distribution is described and possible functions discussed.

Copulatory system of the spider crab Libinia spinosa (Crustacea: Brachyura: Majoidea)

2011 ◽  
Vol 91 (8) ◽  
pp. 1617-1625 ◽  
Author(s):  
M.P. Sal Moyano ◽  
M.A. Gavio ◽  
E.I. Cuartas
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Functional Morphology ◽  
Carapace Width ◽  
Morphological Characteristics ◽  
Spider Crab ◽  
Flexible Membrane ◽  
Physiological Maturity ◽  
Different Types ◽  
Scanning Electron

Functional morphology of the male gonopods, female holding systems and vulvae of Libinia spinosa are described using scanning electron microscopy and histological sections, establishing differences between immature and mature individuals. The first gonopod of mature males, larger than 35.1 mm of carapace width (CW), is long, slender, and ending in two wing-like processes; abdominal, characterized by the presence of a sub-terminal seminal canal, and sternal, closed and where the cuticle holds setae. In immature males, smaller than 29.9 mm CW, both processes are shorter, and the tip of the abdominal process closed. Six different types of setae are described for both gonopods. Internally, the gonopods have rosette glands in immature and mature individuals. The presence of secretions, which may be involved in the moulting process, was observed in immature males towards the external cuticle corresponding to the rosette glands. The rosette glands may be related to reproduction in mature males. Females presented a press-button holding system and a biconcave vulva. In immature females, smaller than 36.1 mm CW, the vulva aperture was closed by integument bulging to the outside. In mature females, larger than 42.6 mm CW, the locking system was almost fused to the cuticle, and the vulvae showed an open biconcave form with a more inner flexible membrane. Morphological characteristics shown by the gonopods of mature males develop synchronously with the acquisition of physiological maturity, not with morphometrical maturity. The mature holding systems and vulvae of females are developed synchronously with physiological and morphometrical maturity.

scholarly journals Evaluation of the surface topography of the collagen membranes by scanning electron microscopy

2020 ◽  
Vol 31 (S20) ◽  
pp. 147-147
Author(s):  
Fernando Antônio Mauad De Abreu ◽  
Elton G. Zenóbio ◽  
Gerluza Aparecida Borges Silva ◽  
Erika Cristina Jorge
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Topography ◽  
Collagen Membranes ◽  
Scanning Electron
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